Spindle-driving device for thread-dressing machines.



PATENTED OCT. 13, 1903.

G, A. FREDBNBURGH. SPINDLE DRIVING DEVICE FOR THREAD DRESSING MACHINES.

APPLICATION PILED APR. 25. 1903.

2 SHEBTSSHEET 1- NO 140mm;

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No. 741,323. PATENTBD 001". 13, 1903,

. G. A. .FBEDENBURGH. SPINDLE DRIVING DEVICE FOR. THREAD DRESSING'MAGHINES.

APPLICATION FILED APR. 25. 1903.

N0 MODEL. ZSHEETS-SHBET 2.

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SPlNDLE-DRIVING DEVICE FOR THREAD-DRESSING MACHlNES.

EBECIFICATION forming part of Letters Patent No. 741,323, dated October 13, 1903.

Application filed April 1 TO ttZZ whom it may concern.-

Be it known that I, GEORGE A. FREDEN- BURGH, a citizen of the United States, residing at the city of Pawtuc ket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Spindle-Driving Devices for Thread- Dressing Machines, of which the following is a specification.

My invention relates to a spindle-driving device adapted for a thread-dressing machine. In this classof machineryprovided with means for guiding the thread to the Winding-spools it frequently happens that the increase in weight of the thread as it feeds upon the spool will cause the driving band or cord to slip upon the whirl of the spool-spindle, with the result that the spool receives a varying speed, causing the thread to feed irregularly upon it.

The object of my invention is to provide means for readily obtaining an increase of tension upon the driving band or cord of the spool-spindle, whereby a more uniform speed is given to the Winding-spool at intervals during the feeding of the thread upon it.

With this end in view my invention consists in the novel construction and combination of the several parts, as hereinafter fully described, and specifically pointed out in the claims.

In the accompanying sheets of drawings, Figure 1 represents a top plan view of a thread-dressing machine having a series of my improved spindle-driving devices in position thereon, together with a means for guiding the thread to the winding-spools. Fig. 2 is an enlarged cross-sectional view taken in line X X of Fig. 1 and illustrating Serial No. 154,343. (No model.)

of a thread-dressing machine having the ordinary spool-spindles b b vertically mounted in proper supports on said frame to receive the winding-spools c c, and each of said spindles has a whirl d rigid thereon. The whirl dJhas a band or cord connection e with a whirl d, rigid upon a horizontal shaft f, which is rotatably mounted in proper supports 9 g of the machine-frame, and at one end of said shaft is made fast a pulley it, having a belt connection with the maiushaft of the machine.

f is a standard rigidly secured to the machine-frame A and provided with a roller 61 which has a peripheral groove to receive the upper portion of the band or cord 6.

j is a lever pivoted upon the standard t' at a point It, and one arm of said lever extends rearwardly of the standard and is provided with a grooved roller d situated above the upper portion of the band or cord 6, and the other arm of said lever j extends toward the front of the standard t' and has its end connected by a pin Z with a bar m, whose opposite end terminates in a circular opening m near to the spool-spindle b. This bar or is provided with teeth m arranged to engage upon the wall of an angle-strip n, which is secured upon the machine-frame by screws 0 0.

In Fig. 2 I show two extreme positions of a mechanism for guiding the thread to the Winding-spools, consisting of a rotatable shaft p, mounted in proper supports on the machine-frame and having a heart-shaped cam rigid thereon, which cam is arranged to contact with a roller 1', that is pivoted upon a stud which is secured'to the short arm of a knee-lever 8, said lever being mounted on a stationary shaft 25 of the machine-frame and having its long arm extending beyond the winding-spools c 0. These parts are in duplicate at each end of the machine, and two shafts u and u have their ends rigid to each end portion of the long arm of the knee-lever s, and a series of grooved rollers 12 o are loosely mounted on the shaft u, and wires 10 w are fastened in the other said shaft u to guide the thread to the groove of each roller 1;, which in turn directs the thread to the winding-spool.

In the ordinary construction of a spindledriving device as the spool becomes filled with the thread the weight of the spool so increased makes the driving band or cord slip upon the whirl-spindle, thus causing an irregular rotation of the spool, with the result that the thread is unevenly fed upon it. With my device this objectionable feature is lessened.

The operation of my invention is as follows: When an empty spool c is to receive the thread m from the thread-guiding mechanism as described, the operator first lifts the bar m by its open-end portion m, which acts as a handle, from its teeth engagement with the upper wall of the angle-strip n, after which the bar is moved inwardly, so to swing the lever- I j to a vertical position upon the standard 2',

and this movement of the said leverj carries its grooved roller 61 free from contact with the uppor portion of the band or cord 6 and allowing the same to have a straight connection between its whirls d and e, as shown in Fig. 2. After the spool becomes partially filled with the thread the bar m is lifted from its teeth engagement with the angle-strip 'n and drawn forward a short distance to again engage with the said angle-strip, and this movement of the bar is sufficient to carry down the grooved roller (1 and kink the band or cord e between the whirl d of the standard and the whirl e of the driving-shaft, and the tension so formed upon the band or cord causes it to adhere more firmly upon the whirl d of the spindle, and thus the spool receives a more uniform circular motion with relation to the mechanism forguiding the thread upon it in the manner as shown in Fig. 3.

I do not wish it understood that I confine myself to this particularconstruction for adjusting the bar m upon the angle-strip n, for, as will be readily understood by referring to Fig. 4, instead of providing the barwith teeth this portion of the bar may be circumferentiallyscrewthreaded and provided with a thumb-nut y, mounted on this portion of the bar and fixedly secured in position on the wall of the angle-strip n to move and hold the roller (Z in any position as may be desired.

This device forms a very simple construction and arrangement of parts for readily 0btaining an increase of tension upon the driving band or cord at intervals during the guiding of the thread upon the spool.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a spindle-driving device for a threaddressing machine, the combination with a horizontal shaft rotatably mounted in proper supports in the machine-frame, one or more grooved whirls rigid upon said shaft, a vertical spindle properly supported on the machine-frame and provided with a windingspool, a grooved whirl rigid upon said spindle and a band or cord connection from the whirl of said shaft to the whirl of said spindle; of a fixed standard, a grooved roller mounted on said standard and situated beneath the upper portion of the aforesaid band or cord, a lever pivoted on saidstandard, a grooved roller mounted on the upper end of said lever, and a bar connected to the lower end of said lever and provided with means for carrying the last-named roller into contact with the band or cord, whereby a kink is formed in the same between the first-named roller and whirl of said shaft, substantially as set forth.

2. In combination with a rotatable horizontal shaft having one or more grooved whirls rigidly secured thereoma vertical spool-spindle having a grooved whirl rigidly secured thereon,.and a band or cord connection from the whirl of said shaft to the whirl of said spool-spindle; of a spindle-driving device, consisting of a fixed standard, a grooved roller mounted on said standard and extending parallel and beneath the upper portion of the band or cord, a lever pivoted on said standard, a grooved roller mounted on said lever and extending parallel and over the upper portion of the band or cord, a fixed anglestrip having an upwardly-projecting wall, and a lifting-bar connected with the lower end of said lever and provided with a series of teeth to engage with the projecting wall of said angle-strip, arranged to carry down the second-named roller in contact with that portion of the band or cord between the roller of said standard and a whirl of said shaft, substantially as shown and for the purpose specified.

3. In combination with a horizontal driving-shaft having one or more grooved whirls rigidly secured thereon, a vertical spool-spindle having a grooved whirl rigid thereon, and a band or cord connection from a whirl of said shaft to the whirl of said spool-spindle; of a spindle-driving device, consisting of a fixed standard, a grooved roller mounted on said standard and situated beneath the upper portion of said band or cord, a lever pivoted on said standard, a grooved roller mounted on the top ofsaid lever and situated over the upper portion of said band or cord, and a bar connected to the bottom of said lever and provided with means to hold the last-named roller in frictional contact upon the said band or cord, substantially as set forth.

In-testimony whereof I aflix my signature in presence of two witnesses.

' GEORGE A. FREDENBURGH.

W'itnesses:

ELMER WALKER, J OSEPH F. LOOKE. 

